This construct is useful when you want to capture one of a number of alternative matches in a single sub-expression index.
当你想用单个子表达式索引捕获多个可选匹配之一的时候，可使用该结构。
Objective To evaluate the left ventricular diastolic function in hypertension with a new echocardiographic expression index of left atrial geometry.
目的以左心房构型超声新表达指标评价左心室舒张功能的改变。
The full-text index finds these XML documents quickly which are then input to the FLWOR expression that extracts all employee names from these documents.
全文本索引迅速找到这些XML文档，随后将它们输入到从这些文档中提取所有员工姓名的FL WOR表达式中。
Although the expression in Listing 34 works, using carefully applied parentheses does the job more cleanly and is easily adapted to select the second, third, or any other index.
尽管清单34中的表达式能够工作，但是使用慎重应用的括号则更为清晰，并且容易改编来选择第二个、第三个或者任何其他索引。
Note: the query optimizer considers using a functional index when the index expression is used in a relational expression or as an argument to one of the operator class functions.
注意：当索引表达式被用于关系表达式，或作为某个操作符类函数的参数时，查询优化器将考虑使用函数索引。
Show how to create XML indexes and how to use information in the DAD to create the XML expression for the index.
展示如何创建xml索引以及如何使用DAD中的信息创建索引的XML表达式。
An integer (or an expression that evaluates to an integer) that represents the index of the desired object in the series.
表示想要的对象在序列中的索引的整数(或计算出整数的表达式)。
Storing multiple table or index fragments in a single dbspace improves query performance over storing each fragmented expression in a different dbspace.
与在单个dbspace中保存多个表或索引片段提高了查询性能，这样做胜过将每个分段表达式存储在不同的dbspace中。
This expression is used inside the braces {} that define the index of the summation. The syntax for an expression is
这个表达式在花括号（{}）中使用，它定义了和的索引。
It says that the function must be used in an expression involving the comparison operation and that the search method "equals" of the index extension hash_index is referred to.
这说明，该函数必须在一个涉及比较操作并且引用了索引扩展hash _ index的搜索方法“equals”的表达式中使用。
Finally, the setvalue action tied to the trigger references that same value element in its index attribute, which can take an XPath expression.
最后，触发器的setvalue操作引用其index属性中的相同value元素，index属性可以使用XPath表达式。
The result of evaluating the nested expression will serve as the index or key for retrieving the appropriate element of the collection or array.
对嵌套表达式求值的结果将被作为下标或键，用来检索集合或数组的适当元素。
Index or expression does not match an existing member of the collection.
索引或表达式与集合的现有成员不匹配。
Objective: To measure the expression of co-stimulatory molecule CD80 on peripheral blood T lymphocytes in patients with psoriasis and its correlation with psoriasis area and severity index (PASI).
目的：研究银屑病患者外周血T淋巴细胞表面共刺激分子CD80的表达及其与银屑病皮损面积和严重程度指数（PASI）的相关性。
The sensitivity expression of system reliability index and the safety margins were presented in the stochastic structure systems.
给出了随机结构系统安全余量和系统可靠性指标的敏度表达式；
Any integer expression can be used as an index.
任意的一个整型表达式，都可以用来作为索引编号。
The enrichment value of resources calculated by the method of index expression could synthetically evaluate the enrichment of resources on the comparative dimension.
指数表示法计算的资源丰度值实现了资源丰度在可比尺度上的综合评价。
The IGF-1R expression status shown no correlation with tumor pathological status, tumor differentiation status, history of smoking, as well as smoking index.
IGF - 1r表达与肿瘤病理类型、肿瘤分化程度、吸烟史及吸烟指数均无相关性。
Conclusion MTA1 gene expression is associated with clinical stages and lymphatic metastasis of cervical cancer. It is a molecular index to predict invasion and metastasis of cervical cancer.
结论MTA1基因表达与宫颈癌临床分期及转移有关，可能预示宫颈癌的浸润转移的分子指标。
Based on the theory of sensitivity analysis, the problem of construction control was translated into a minimum problem with restraints, and the expression for sensitivity index was denied.
基于敏感性分析的基本原理，将施工控制目标转化为有约束的极小值问题，推导了结构设计参数对控制目标的敏感因子计算公式。
Powerful index search engine and a proper full-feature regular expression engine for binary searches.
强大的搜索引擎索引和适当的全功能的二进制搜索正则表达式引擎。
One model is fuzzy cluster analysis of gene expression data based on a cluster validity measure named Xie-Beni index.
一种模型是基于有效性测度谢白尼指数的基因表达数据的模糊聚类分析。
First, points out that a CBR system must consider the relationships of case expression, case index and case adaptation generally, emphasizes the importance of the methods of knowledge expression.
论文分析研究了进行实例修改所要解决的关键问题：首先、指出一个CBR系统必须综合考虑知识表达、实例检索与实例修改之间的关系，强调合适的知识表示方法的重要性。
Elevated protein expression of GRP78 was correlated positively with the content of MDA and HCY in plasma and the index of liver fibrosis (P<0.01).
表达增高的GRP78蛋白分别与血浆MDA和HCY水平以及肝纤维化指数呈显著正相关（P<0.01）。
The high expression of Angiopoietin-2 and low expression of E-Cadherin maybe be regarded as an index screening liver carcinoma of strongly potential invasion and high frequent metastasis.
血管生成素一2高表达和E一钙粘附蛋白低表达有可能作为筛查高侵袭性、高转移能力的肝癌亚型的指标。
This system includes evaluation model, the structure of the model, index system, evaluation criterion, weight coefficient, evaluation index and calculating expression.
该系统包括评判模型、模型的结构层次、指标体系、评价标准、权重系数、评价指标、计算公式等内容。
Detection ALCAM expression can be used as an index of predicting ovarian malignant epithelial neoplasm occurrence.
检测alcam的表达可作为预测卵巢恶性上皮性肿瘤发生的一项指标。
An arbitrary expression, including a simple identifier, inside square brackets can index the property.
方括号内的任意表达式(包括简单的标识符)都可以作为该属性的索引。
An arbitrary expression, including a simple identifier, inside square brackets can index the property.
方括号内的任意表达式(包括简单的标识符)都可以作为该属性的索引。
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